13 East vs 14 East; which one is more eastern?

[aekostas]

Apologies for the simple question: if my dish is pointing at (say) 28 East and I want to reposition it to 19 East, do I move it towards the geographic East, or towards the West?

Thanks!

[SamRadford]

28'E is more east than 19'E. So you move it west.

Bear in mind that these "degree references" are satellite positions measured from a line going out from the centre of the earth through the equator on the Greenwich meridian. They are not compass bearings (although they happen to be close if you are near the Greenwich Meridian).

See http://www.satcure.co.uk/tech/satposition.htm

.
.

[Chris Muriel]

East means "East of south".
West means "west of south".
For anyone used to working with 0-360º where zero=north and 180=south (e.g. radio amateurs) this can at first be confusing.
28º east is the equivalent of 152º in that system (ignoring what was said above regarding the south/north reference line and magnetic deviation).

Chris Muriel, Manchester

[aekostas]

Thanks very much for this.

[SamRadford]

Originally Posted by Chris Muriel

(ignoring what was said above regarding the south/north reference line and magnetic deviation).

Heck, I didn't even mention "magnetic deviation". Let's not complicate matters further! He's already struggling with how far east is east.

[mhuk05]

I didn't even mention "magnetic deviation"

If the dish is already pointing at 28.2E the position will be relative, although the arc will be different (azimuth; Clarke belt?).

[Chris Muriel]

You must actually mean that the elevation will be different.
Maximum elevation will be at due south. 19ºE will require the dish to be pointing upwards (or higher) by a couple of degrees compared with 28ºE.

Chris Muriel, Manchester

[mhuk05]

That's it

Clarke Belt:


T[FONT=Verdana, Arial, Helvetica, sans-serif]he Clark Belt viewed from northern Europe

[/FONT][FONT=Verdana, Arial, Helvetica, sans-serif]The idea of geo-stationary satellites was first suggested by Arthur C Clarke in an article written for Wirless World magazine in October 1946.
The region in space occupied by these satellites is commonly referred to as 'The Clarke Belt'[/FONT]

[Chris Muriel]

Posting that picture was a great idea - worth a thousand words

Chris Muriel, Manchester